Metro Detroit, Michigan | Tankless Water Heater Contractor Evaluation
Is Great Dane a Good Choice for Tankless Water Heater Installation?
Great Dane Heating, Cooling, Electrical & Plumbing installs and services water heaters in the Metro Detroit area. If you are considering a tankless water heater, the important questions are whether the company serves your address, whether the equipment can supply enough hot water during Michigan winters, and what the complete installation will cost.
Great Dane offers plumbing, HVAC and electrical services. That can be useful for tankless installations involving gas piping, electrical connections, venting and plumbing modifications. However, the company should still provide a detailed written estimate before you commit.
Company
Great Dane Heating, Cooling, Electrical & Plumbing
Residential plumbing, heating, cooling and electrical services.
Primary Service Area
Metro Detroit, particularly Macomb and Oakland counties.
Confirm ZIP-code coverage before booking.
Clinton Township Location
36611 Gratiot Avenue
Clinton Township, MI 48035
Showroom with water heating equipment information.
What Does Great Dane Offer for Tankless Water Heaters?
Great Dane’s official company and plumbing pages describe tankless water heater installations alongside conventional storage-tank replacements and other plumbing services.
The company also provides electrical and heating services. This broader service range matters when an existing home needs more than a simple heater replacement.
| Company Detail | What It Means for Homeowners |
|---|---|
| Water heater installation | Customers can ask about replacing a conventional tank with a tankless system. |
| Plumbing services | Water supply, piping and heater connections can be evaluated. |
| Electrical services | Additional wiring or electrical changes can be assessed when required. |
| Heating and mechanical services | Gas-fired appliance and related mechanical installation questions can be addressed. |
| Showroom | Customers can ask to see available tankless water heating systems before purchasing. |
Important: Do not assume all trades, permits and associated upgrades are automatically included in a quoted installation price. Request a written scope identifying who performs each part of the work.
How to Evaluate Great Dane Before Hiring
A reliable contractor evaluation goes beyond online ratings or a promotional coupon. Use the same questions when comparing Great Dane with another licensed plumbing contractor.
- Confirm the service location. Call 586-267-0818 and provide your city and ZIP code. Ask whether Great Dane installs and maintains tankless heaters at your address.
- Describe your current heater. Tell the estimator whether your existing equipment uses natural gas, propane or electricity, and whether you currently have a 40- or 50-gallon storage tank.
- Request an on-site assessment. Ask the technician to inspect the current gas or electrical supply, water connections, venting route, available space and drainage.
- Require an exact equipment model. The quote should identify the manufacturer, model number, heating capacity, efficiency rating and hot-water flow capability.
- Get one all-inclusive price. Ask for a breakdown of equipment, labor, materials, gas or electrical upgrades, permits, old heater removal and additional charges.
- Review warranty and service terms. Confirm manufacturer parts coverage, heat-exchanger coverage, labor warranty and who handles warranty calls.
- Compare at least one other quote. Use similar equipment and the same installation requirements to make a meaningful price comparison.
Great Dane Contractor License Information
Great Dane publishes these Michigan contractor license numbers:
- Mechanical Contractor: 7113133
- Electrical Contractor: 6115072
- Plumbing Contractor: 8001844
These numbers are company-published identifiers, not independent confirmation of current license status. Check the official Michigan LARA contractor license lookup before signing a substantial installation contract.
Will a Tankless Water Heater Handle Michigan Winter Demand?
Tankless water heaters heat water as it flows through the equipment. Instead of storing 40 or 50 gallons, the heater must produce enough hot water every minute for the fixtures running simultaneously.
That makes correct sizing especially important in Michigan, where incoming winter water can be much colder than summer water.
Two Measurements That Matter
Gallons Per Minute (GPM)
The amount of hot water the heater can supply while maintaining the required temperature rise.
Temperature Rise
The difference between incoming cold-water temperature and the desired heated-water temperature.
For example, if incoming water is 45°F and the requested water temperature is 120°F, the heater needs a 75°F temperature rise. This is an illustrative calculation, not a measured groundwater temperature for every Metro Detroit home.
| Household Use | What the Contractor Should Check |
|---|---|
| One shower at a time | Flow requirement of the shower and available hot-water output. |
| Two simultaneous showers | Combined GPM at the winter design temperature rise. |
| Shower plus dishwasher | Peak overlapping demand and dishwasher heating requirements. |
| Large bathtub | Required filling speed and sustained output. |
| Multiple bathrooms | Whether one heater is sufficient or another arrangement is appropriate. |
The U.S. Department of Energy’s tankless sizing tool can help explain flow rates, temperature rise and heating requirements.
Tankless vs. Traditional Tank vs. Heat Pump Water Heater
Tankless equipment is not automatically the best choice for every house. Ask Great Dane to compare your realistic alternatives.
| System | Potential Advantages | Important Limitations |
|---|---|---|
| Gas tankless | On-demand heating, reduced storage losses and compact wall-mounted designs. | Higher initial investment in many retrofits; gas, venting and maintenance requirements. |
| Standard gas tank | Often a simpler replacement with lower upfront installation costs. | Finite stored hot-water supply and standby heat loss. |
| Heat pump water heater | High efficiency for suitable electric-water-heating installations. | Requires suitable installation space, air conditions and condensate management. |
| Electric tankless | Compact design without gas combustion venting. | Whole-home models can require substantial electrical capacity. |
If your current electric storage heater needs replacement, compare a heat pump water heater before choosing electric tankless. If you have a gas tank, ask for the installed price of both a standard gas replacement and a properly sized gas tankless unit.
For efficiency benchmarks, review ENERGY STAR Water Heater Product Criteria.
What Should a Great Dane Tankless Installation Quote Include?
Great Dane does not publish a universal installed tankless water heater price that can reliably describe every property. The cost depends on the selected heater and the work required inside your home.
| Quote Item | Why It Matters |
|---|---|
| Exact model and capacity | Determines whether the equipment fits your household demand. |
| Water heater and installation labor | Establishes the main contract price. |
| Gas supply or electrical work | Existing connections may be inadequate for the replacement unit. |
| Combustion intake and venting | Gas-fired appliances require approved vent arrangements. |
| Condensate drainage | Condensing units may need proper drainage and neutralization. |
| Water isolation valves | Allow the heater to be serviced and flushed. |
| Permits and inspection | Local requirements vary and should be assigned clearly. |
| Old heater removal | Removal and disposal should not become a surprise charge. |
| Warranty | Separates equipment coverage from installation labor coverage. |
| Maintenance | Shows expected descaling and service costs after installation. |
Use This Checklist When Requesting an Estimate
Ask the company for:
“Please provide a written tankless water heater estimate for my home, including manufacturer and model, GPM output at winter temperature rise, UEF rating, installed price, gas or electrical work, venting, condensate drain, permits, old heater removal, warranties, maintenance requirements and available discounts.”
If a contractor offers financing, compare the total repayment amount rather than looking only at the monthly payment.
Great Dane Tankless Coupons, Utility Rebates and 2026 Tax Credits
Great Dane Promotional Discounts
Great Dane previously advertised $500 off a tankless water heater on its official plumbing specials page. The published offer expired September 30, 2026, and included restrictions against combining offers.
That promotion should not be counted as an available discount on October 24, 2026 without renewed confirmation from Great Dane.
Check Great Dane’s current plumbing specials or call 586-267-0818 before relying on any coupon.
DTE Energy or Consumers Energy Rebates
Michigan utility incentives can vary according to your natural gas provider, equipment efficiency, contractor participation and available program funds.
- Check whether your home receives natural gas from DTE Energy, Consumers Energy or another provider.
- Ask Great Dane for the exact tankless model number and UEF rating.
- Visit your gas utility’s official residential energy-efficiency or rebate pages.
- Confirm equipment eligibility and whether an approved contractor is required.
- Ask whether the rebate is deducted directly from the invoice or requires a separate application.
- Do not subtract a rebate from your budget until the program confirms eligibility.
Official utilities: DTE Energy and Consumers Energy.
Can You Claim a Federal Tankless Water Heater Tax Credit in 2026?
The IRS states that the federal Energy Efficient Home Improvement Credit under Section 25C does not apply to qualifying property placed in service after December 31, 2025.
Therefore, do not include a federal Section 25C tax credit when calculating the expected savings for a new tankless water heater installed in 2026 under current law.
See the IRS Form 5695 instructions for the applicable rules.
What Maintenance Will a Tankless Heater Need?
Tankless water heaters do not eliminate maintenance. Mineral scale, restricted filters, vent problems and neglected condensate equipment can reduce performance or lead to expensive service calls.
- Descaling: Ask how often the manufacturer recommends flushing the heat exchanger based on local water quality and usage.
- Inlet filter: Have the technician show you the filter and explain any safe owner-maintenance steps.
- Venting: Gas units need correctly installed combustion air and exhaust systems.
- Condensate equipment: Some condensing models require drain and neutralizer maintenance.
- Warranty paperwork: Keep the model, serial number, invoice and service history.
Questions to Ask Before the Installer Leaves
- Where are the shutoff and isolation valves?
- How do I change the hot-water temperature safely?
- What do the error codes mean?
- When should the first maintenance service be scheduled?
- Who handles warranty claims and emergency repairs?
- Which maintenance activities are required to preserve coverage?
Great Dane’s Metro Detroit Service Area and Contact
Great Dane’s official site focuses on Greater Detroit and nearby communities, especially in Macomb and Oakland counties.
Its Clinton Township showroom is located at:
Great Dane — Clinton Township
Address:
36611 Gratiot Avenue
Clinton Township, MI 48035
Phone: 586-267-0818
Website: greatdanehvac.com
Great Dane also references Farmington Hills and other Oakland County communities. Service coverage and showroom availability should be confirmed before traveling or scheduling an appointment.
When Should You Choose Great Dane or Compare Another Installer?
Consider Great Dane When
- Your home is in its active service area.
- You want plumbing and related trade work coordinated.
- The quote includes exact equipment and installation details.
- Warranty and maintenance terms are clearly documented.
- You are comfortable with the verified all-in cost.
Compare More Estimates When
- Major gas-line or venting upgrades are required.
- The installation price is significantly above your budget.
- The contractor does not explain winter GPM capacity.
- Permits or additional work are excluded.
- Maintenance and warranty responsibilities are unclear.
A practical decision is to compare Great Dane with another licensed local contractor using the same equipment capacity and scope. This reveals whether a price difference reflects better equipment, more complete installation work or simply excluded charges.
Frequently Asked Questions
Does Great Dane install tankless water heaters?
Yes. Great Dane’s official company and plumbing information describes tankless water heater installation and related water heater services in the Metro Detroit area.
What is Great Dane’s phone number?
Call 586-267-0818 to ask about tankless water heater estimates, service coverage and installation options.
Where is Great Dane located?
The company lists a showroom at 36611 Gratiot Avenue, Clinton Township, MI 48035, and also serves areas around Farmington Hills and Metro Detroit.
Does Great Dane offer tankless water heater discounts?
The company advertised a $500 tankless discount expiring September 30, 2026. Check its current plumbing specials or call directly to confirm whether a replacement offer is available.
Is Great Dane a water utility company?
No. Great Dane Heating, Cooling, Electrical & Plumbing is a home services contractor, not a municipal drinking-water or water-billing utility.
How do I know which tankless heater size is right?
Have the installer calculate simultaneous hot-water demand and the temperature rise needed during cold Michigan weather. Request the actual GPM output for the selected model under those conditions.
Is tankless always cheaper than a traditional water heater?
No. Tankless heaters may reduce standby energy losses, but installation can be more expensive. Compare equipment, installation, energy use, maintenance and expected service life.
Does Great Dane handle electrical and plumbing work?
The company advertises both electrical and plumbing services. Ask whether the exact work needed for your tankless installation is included in the written estimate.
Can Michigan homeowners receive utility rebates?
Possibly. Eligibility depends on the natural gas provider, equipment model, efficiency rating and applicable program rules. Verify incentives directly with DTE Energy, Consumers Energy or your actual utility.
Is there a federal tax credit for a tankless water heater installed in 2026?
Under current IRS guidance, Section 25C energy-efficient home improvement credits are unavailable for property placed in service after December 31, 2025.
Official Sources for Evaluating Great Dane
- Great Dane — Company and Services
- Great Dane — Plumbing Promotions
- Michigan LARA — Contractor License Verification
- U.S. DOE — Gas Tankless Water Heater Guidance
- DOE — Tankless Water Heater Sizing Tool
- ENERGY STAR — Water Heater Efficiency Criteria
- IRS — Residential Energy Credit Rules
Information reviewed October 24, 2026. Great Dane’s last verified advertised tankless promotion expired September 30, 2026. Confirm current promotions, license status, service area, equipment availability and installation terms before purchasing.